The main linacs of the International Linear Collider are composed of 1824 cryomodules. As part of the R&D on the cryomodule, simplifications of the design were considered to reduce the construction and installation costs, including the possibility of removing a portion of the 5 K thermal shield. For this investigation the heat load measurements of a 6 meter cryomodule with and without the 5 K shield were performed, and used to determine emissivity coefficients. A thermal model of a full cryomodule was then created, and the heat loads of the cryomodule with the full set of the 5 K shield and without the lower 5 K shield were calculated with these parameters. By using a modified cooling scheme for the high temperature thermal shielding, we showed that the heat loads at 2 K between two models are substantially equivalent, and indeed, the thermal model without the 5 K lower shield requires 2% less work from the refrigerator.
Study of thermal radiation shields for the ILC cryomodule / N. Ohuchi, T. Arkan, S. Barbanotti, H. Carter, J. Kerby, H. Nakai, C. Pagani, T. Peterson, P. Pierini, K. Tsuchiya, A. Yamamoto, Z. Zong - In: Advances in cryogenic engineering, volume 57A : transactions of the Cryogenic Engineering Conference - CEC ; Spokane, Washington, USA, 13 - 17 June 2011 / [a cura di] J. G. Weisend, J. Barclay. - Melville : American Institute of Physics, 2012. - ISBN 9780735410206. - pp. 929-936 (( convegno Joint Cryogenic Engineering and International Cryogenic Materials Conference (CEC/ICMC) tenutosi a Spokane, Washington nel 2011.
|Titolo:||Study of thermal radiation shields for the ILC cryomodule|
|Parole Chiave:||international linear collider; superconducting radiofrequency; particle accelerators; cryogenics|
|Settore Scientifico Disciplinare:||Settore FIS/01 - Fisica Sperimentale|
|Data di pubblicazione:||2012|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1063/1.4707009|
|Tipologia:||Book Part (author)|
|Appare nelle tipologie:||03 - Contributo in volume|